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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In one dimensional flow, the flow

Takes place in straight line
Takes place in one direction
Is steady and uniform
Takes place in curve

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Hydraulics and Fluid Mechanics in ME
The overall efficiency for a Pelton wheel lies between

0.85 to 0.90
0.65 to 0.75
0.75 to 0.85
0.50 to 0.65

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Hydraulics and Fluid Mechanics in ME
When the Mach number is between ___ the flow is called super-sonic flow.

1 and 2.5
4 and 6
1 and 6
2.5 and 4

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Hydraulics and Fluid Mechanics in ME
Geometric similarity is said to exist between the model and the prototype, if both of them

Are equal in size and shape
Have identical velocities
Are identical in shape, but differ only in size
Have identical forces

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Hydraulics and Fluid Mechanics in ME
The speed of a turbine runner is

Directly proportional to H1/2
Directly proportional to H3/2
Inversely proportional to H3/2
Inversely proportional to H1/2

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Hydraulics and Fluid Mechanics in ME
The total pressure on an immersed surface inclined at an angle θ with the liquid surface is

wA
wAx/sinθ
wx
wAx

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